CN110678803A

CN110678803A - Lens driving device, and camera module and optical apparatus including the same

Info

Publication number: CN110678803A
Application number: CN201880034394.9A
Authority: CN
Inventors: 李成国
Original assignee: LG Innotek Co Ltd
Current assignee: LG Innotek Co Ltd
Priority date: 2017-05-26
Filing date: 2018-05-16
Publication date: 2020-01-10
Anticipated expiration: 2038-05-16
Also published as: EP3637173A4; KR102402616B1; CN110678803B; CN114967168A; KR20180129358A; US11561362B2; EP3637173A1; US20230089048A1; WO2018216945A1; US20200081220A1; CN114935829A

Abstract

The implementation mode comprises the following steps: a housing; a spool disposed in the housing; a coil disposed on the bobbin; a magnet disposed in the side portion of the housing and including a first side surface facing the coil and a second side surface opposite the first side surface; and a yoke provided in an upper portion of the housing and overlapping the magnet in the optical axis direction, wherein a center line of the magnet is located on one side with respect to the reference line; a first groove provided at the first end of the magnet to abut one end of the first side surface of the magnet; a second groove provided at the second end of the magnet to abut on the other end of the first side surface of the magnet; the reference line passes through the center of the housing and is perpendicular to the outer surface of the side portion of the housing where the magnet is disposed; and the center line of the magnet is a straight line passing through the center between the first and second end portions of the magnet and perpendicular to the first side surface of the magnet.

Description

Lens driving device, and camera module and optical apparatus including the same

Technical Field

Embodiments relate to a lens moving device, and a camera module and an optical instrument including the lens moving device.

Background

Mobile phones or smart phones have been developed in which a camera module capturing and storing an image or video of an object is mounted. In general, a camera module may include a lens, an image sensor module, and a Voice Coil Motor (VCM) for adjusting a distance between the lens and the image sensor module to adjust a focal length of the lens, i.e., to perform Auto Focusing.

Disclosure of Invention

Technical problem

Embodiments provide a lens moving device capable of securing an AF driving force and reducing magnetic field interference to an adjacent lens moving device, and a camera module and an optical instrument including the lens moving device.

Technical scheme

In one embodiment, a lens moving apparatus includes: a housing; a spool disposed in the housing; a coil disposed at the bobbin; a magnet disposed at the side portion of the case, the magnet including a first side surface facing the coil and a second side surface opposite to the first side surface; and a yoke provided at an upper portion of the housing to overlap the magnet in the optical axis direction, wherein a center line of the magnet is located at one side with respect to a base line, a first recess is provided in a first end portion of the magnet, the first recess is adjacent to one end portion of a first side surface of the magnet, a second recess is provided in a second end portion of the magnet, the second recess is adjacent to the other end portion of the first side surface of the magnet, the base line is a straight line passing through a center of the housing and perpendicular to an outer surface of a side portion of the housing where the magnet is provided, and the center line of the magnet is a straight line passing through a center of the magnet between the first end portion and the second end portion of the magnet and perpendicular to the first side surface of the magnet.

The first recess may be formed by chamfering one corner portion at the first end portion of the magnet, and the second recess may be formed by chamfering one corner portion at the second end portion of the magnet.

The horizontal length of the second recess may be longer than the horizontal length of the first recess, and each of the horizontal direction of the second recess and the horizontal direction of the first recess may be a direction parallel to a direction from the first end to the second end of the magnet.

The centerline of the magnet may be spaced apart from the baseline by K (K being a positive real number), which is greater than 0mm and equal to or less than 0.5 mm.

The centerline of the yoke may be located in a range of 0mm to 0.5mm from the base line toward the centerline of the magnet with respect to the base line.

The horizontal length of the second side surface of the magnet may be longer than the horizontal length of the first side surface of the magnet, and each of the horizontal direction of the first side surface of the magnet and the horizontal direction of the second side surface of the magnet may be a direction parallel to a direction from the first end portion to the second end portion of the magnet.

The yoke may include: a body; a first extension portion connected to the body, the first extension portion extending from a centerline of the magnet toward the first end of the magnet; and a second extension portion connected to the body, the second extension portion extending from a centerline of the magnet toward the second end of the magnet.

Each of a vertical length of the first extension portion and a vertical length of the second extension portion may be smaller than a vertical length of the body, and each of a vertical direction of the first extension portion, a vertical direction of the second extension portion, and a vertical direction of the body is a direction perpendicular to a horizontal direction of the first side surface of the magnet.

The yoke may be disposed in a symmetrical manner with respect to the base line, and may be disposed in an asymmetrical manner with respect to the center line of the magnet.

The lens moving device may further include an upper elastic member coupled to an upper portion of the housing, wherein the yoke may be disposed on the upper elastic member, and the housing may include a protrusion coupled to the upper elastic member and coupled to the yoke.

Advantageous effects

According to the embodiments, it is possible to secure an AF driving force and reduce magnetic field interference to an adjacent lens moving device.

Drawings

Fig. 1 is a perspective view of a lens moving device according to an embodiment.

Fig. 2 is a perspective view of the lens moving device of fig. 1, with a cover member removed.

Fig. 3a is a first perspective view of the spool shown in fig. 2.

Fig. 3b is a perspective view showing the coupling between the bobbin and the coil.

Fig. 4a is a perspective view of the housing of fig. 2.

Fig. 4b is a first perspective view illustrating the coupling between the housing and the magnet of fig. 2.

Fig. 4c is a second perspective view illustrating the coupling between the housing and the magnet of fig. 2.

Fig. 5 is a perspective view of the housing, the magnet, the upper elastic member, and the yoke.

Fig. 6 is a perspective view of the housing and the lower elastic member.

Fig. 7a is a first perspective view of the base and the lower elastic member.

Fig. 7b is a second perspective view of the base and the lower resilient member.

Fig. 8 shows the magnet and yoke unit mounted to the housing.

Fig. 9 illustrates an embodiment of the arrangement of the housing, the first magnet, and the first yoke illustrated in fig. 8.

Fig. 10a shows the arrangement of the bobbin, the first magnet and the first yoke shown in fig. 9.

Fig. 10b is an enlarged view of the first magnet and the first yoke shown in fig. 9.

Fig. 11a shows an arrangement of a first yoke according to another embodiment.

Fig. 11b is an enlarged view of the first magnet and the first yoke shown in fig. 11 a.

Fig. 12 shows an arrangement of a first yoke according to another embodiment.

Fig. 13 shows a first yoke according to another embodiment.

Fig. 14a shows an arrangement of a first magnet and a first yoke according to another embodiment.

Fig. 14b shows a modification of fig. 13.

Fig. 15a shows the displacement and inclination of the AF operation unit depending on the driving current at room temperature when the yoke unit according to the embodiment is not provided.

Fig. 15b shows the inclination value of the displacement of the AF operation unit of fig. 14a and the sensitivity of the AF operation unit.

Fig. 16a shows the displacement and inclination of the AF operation unit depending on the driving current at an ambient temperature of 99 ℃ when the yoke unit according to the embodiment is not provided.

Fig. 16b shows the inclination value of the displacement of the AF operation unit of fig. 16a and the sensitivity of the AF operation unit.

Fig. 17a shows the displacement and inclination of the AF operation unit depending on the drive current at room temperature when the yoke unit is provided.

Fig. 17b shows the inclination value of the displacement of the AF operation unit of fig. 17a and the sensitivity of the AF operation unit.

Fig. 18a shows the displacement and tilt of the AF operation unit depending on the drive current at an ambient temperature of 99 ℃ when the yoke unit is set.

Fig. 18b shows the inclination value of the displacement of the AF operation unit of fig. 18a and the sensitivity of the AF operation unit.

Fig. 19 shows an embodiment of a dual camera module.

Fig. 20 is a conceptual diagram of the dual camera module shown in fig. 19.

Fig. 21 is an exploded perspective view of a camera module according to an embodiment.

Fig. 22 is a perspective view of a portable terminal according to an embodiment.

Fig. 23 shows a structure of the portable terminal shown in fig. 22.

Detailed Description

Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings.

In the following description of the embodiments, it will be understood that, when each element is referred to as being "on" or "under" another element, it can be "directly on or under the other element or can be" indirectly "formed such that intermediate elements are also present. In addition, when an element is referred to as being "on … …" or "under … …," it can be "under the element" as well as "on the element" based on the element.

In addition, relational terms such as "first," "second," "upper/above," and "lower/below" are used solely to distinguish one object or element from another object or element without necessarily requiring or relating to any physical or logical relationship or order between the objects or elements. Further, wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

In addition, the terms "comprising," "including," and "having" mean that the elements may be inherent unless otherwise specified. Thus, the terms should not be interpreted to exclude other elements, but may also include such other elements. In addition, the term "corresponding" may mean at least one of "opposite" or "overlapping".

For ease of description, the lens moving device will be described using a cartesian coordinate system (x, y, z). However, the present disclosure is not limited thereto. Other different coordinate systems may be used. In the drawings, the x-axis direction and the y-axis direction are directions perpendicular to the z-axis direction as the optical axis direction. The Optical Axis (OA) direction or the z-axis direction parallel to the Optical Axis (OA) direction may be referred to as a "first direction", the x-axis direction may be referred to as a "second direction", and the y-axis direction may be referred to as a "third direction".

The lens moving device according to the embodiment is an auto-focusing device that automatically forms a focus of an image of an object on a surface of an image sensor. That is, the lens moving apparatus according to the embodiment may move an optical module including at least one lens in a first direction parallel to an optical axis direction to perform an auto-focus operation.

Hereinafter, the lens moving device may mean a "voice coil motor", "lens moving motor", or "actuator", which may be used instead of the lens moving device.

Fig. 1 is a perspective view of a lens moving device 100 according to an embodiment, fig. 2 is a perspective view of a lens moving device 300 of fig. 1, wherein the cover member is removed, figure 3a is a first perspective view of the spool 110 shown in figure 2, fig. 3b is a perspective view illustrating the coupling between the bobbin 110 and the coil 120, fig. 4a is a perspective view of the case 140 of fig. 2, figure 4b is a first perspective view illustrating the coupling between the housing 140 and the magnet 130 of figure 2, fig. 4c is a second perspective view illustrating the coupling between the housing 140 and the magnet of fig. 2, fig. 5 is a perspective view of the housing 140, the magnet 130, the upper elastic member 150 and the

yokes

192a and 192b, fig. 6 is a perspective view of the housing 140 and the lower elastic member 160, fig. 7a is a first perspective view of the base 210 and the lower elastic member 160, and fig. 7b is a second perspective view of the base 210 and the lower elastic member 160.

Referring to fig. 1 to 7b, the lens moving device 100 may include a bobbin 110, a coil 120, a magnet 130, a housing 140, an upper elastic member 150, a lower elastic member 160, and a yoke unit 190.

In addition, the lens moving device 100 may further include a cover member 300 and a base 210.

First, the cover member 300 will be described.

The cover member 300 receives the

other components

110, 120, 130, 140, 150, 160, and 190 in the receiving space formed together with the base 210.

The cover member 300 may be formed in a box shape, a lower portion of the cover member 300 is opened, and the cover member 300 includes an upper plate and a side plate. The lower end of the side plate of the cover member 300 may be coupled to the upper portion of the base 210. The shape of the upper plate of the cover member 300 may be polygonal, for example, quadrangular or octagonal.

The cover member 300 may be provided with an opening through which a lens (not shown) coupled to the bobbin 110 is exposed to external light in an upper plate of the cover member 300.

The cover member 300 may be made of a non-magnetic material such as SUS.

When the cover member 300 made of a non-magnetic material is used, a phenomenon in which the magnet 130 attracts the cover member 330 can be prevented.

In addition, since the non-magnetic cover member is used, magnetic field interference to an adjacent lens moving device, such as a lens moving device capable of performing AF or OIS operation, can be reduced.

For example, in a dual (dual) camera module including an AF actuator and an OIS actuator, when a distance between the AF actuator and the OIS actuator is small, the cover member 300 made of a non-magnetic material may be used to reduce magnetic field interference, so that abnormal AF operation or OIS operation may be prevented.

Next, the bobbin 110 will be described.

Referring to fig. 3a and 3b, the bobbin 110 may be disposed inside the case 140 and may be moved in a first direction (e.g., a Z-axis direction) due to electromagnetic interaction between the coil 120 and the magnet 130.

A lens (not shown) may be directly coupled to the inner surface 110a of the bobbin 110. However, the present disclosure is not limited thereto. For example, the bobbin 110 may include a lens barrel (not shown) in which at least one lens is mounted. The lens barrel may be coupled inside the wire barrel 110 in various ways.

The bobbin 110 may have an opening in which a lens or a lens barrel is mounted. The opening in the bobbin 110 may be a hole formed through the bobbin 110, and the shape of the opening of the bobbin 110 may conform to the shape of a lens or lens barrel mounted in the opening. For example, the shape of the opening may be circular, elliptical, or polygonal. However, the present disclosure is not limited thereto.

The wire barrel 110 may have at least one first upper protrusion 113 disposed on an upper surface of the wire barrel 110 to be coupled and fixed to the inner frame 151 of the upper elastic member 150, and at least one first lower protrusion 117 disposed on a lower surface of the wire barrel 110 to be coupled and fixed to the inner frame 161 of the lower elastic member 160.

The bobbin 110 may have an upper escape recess 112a, the upper escape recess 112a being provided in an area of an upper surface of the bobbin corresponding to or aligned with the first frame connection part 153 of the upper elastic member 150. In addition, the bobbin 110 may have a lower escape recess 112b, the lower escape recess 112b being provided in a region of a lower surface of the bobbin corresponding to or aligned with the second frame connecting part 163 of the lower elastic member 160.

When the bobbin 110 moves in the first direction, the spatial interference between the first frame connecting part 153 and the bobbin 110 and between the second frame connecting part 163 and the bobbin 110 may be eliminated by the upper escape recess 112a and the lower escape recess 112b of the bobbin 110, and thus, the first frame connecting part 153 and the second frame connecting part 163 may be easily elastically deformed.

The bobbin 110 may be provided with at least one recess 105 in an outer surface 110b of the bobbin 110, and the coil 120 may be provided or seated in the recess 105 of the bobbin 110. For example, as shown in fig. 3a, the recess 105 may have a ring shape rotating around the optical axis, however, the present disclosure is not limited thereto.

The shape and number of the recesses 105 may correspond to the shape and number of the coils disposed around the outer surface 110b of the bobbin 110. In another embodiment, the bobbin 110 may not have a recess for coil seating.

The outer surface 110b of the bobbin 110 may include a first side surface 110b-1 corresponding to the first side portion 141 of the case 140 and a second side surface 110b-2 corresponding to the second side portion 142 of the case 140.

Next, the coil 120 will be described.

The coil 120 is disposed around the outer surface 110b of the bobbin 110 and electromagnetically interacts with the magnet 130 disposed in the housing 140.

In order to generate an electromagnetic force through electromagnetic interaction with the magnet 130, a driving signal may be applied to the coil 120. In this case, the driving signal may be a direct current signal, or may have a form of voltage or current.

The AF operation unit elastically supported by the upper and lower elastic members 150 and 160 may be moved in the first direction by an electromagnetic force generated by an electromagnetic interaction between the coil 120 and the magnet 130. The electromagnetic force may be adjusted to control the movement of the bobbin 110 in the first direction, so that the auto-focusing function may be performed.

The AF operation unit may include a bobbin 110 elastically supported by upper and lower elastic members 150 and 160, and a part mounted to the bobbin 110 so as to be movable together with the bobbin 110. For example, the AF operation unit may include a bobbin 110 and a coil 120. In addition, the AF operation unit may further include a lens (not shown) attached to the bobbin, for example.

Referring to fig. 3b, the coil 120 may be wound to cover the outer surface 110b of the bobbin 110 to rotate in a clockwise direction or in a counterclockwise direction about the optical axis.

For example, the coil 120 may be disposed or wound in a recess 105 disposed in the outer surface 110b of the bobbin 110.

For example, the coil 120 may have a ring shape that wraps the outer surface 110b of the bobbin 110 in a clockwise direction or in a counterclockwise direction around the optical axis. In fig. 3a, the coil 120 may have the shape of a single ring, however, the present disclosure is not limited thereto. Two or more coil loops may be included.

In another embodiment, the coil 120 may be implemented as a coil loop wound in a clockwise direction or in a counterclockwise direction about an axis perpendicular to the optical axis. The number of coil loops may be equal to the number of magnets 130, however, the present disclosure is not limited thereto.

The coil 120 may be connected to at least one of the upper elastic member 150 or the lower elastic member 160. For example, the coil 120 may be connected to the

lower springs

160a and 160b, and a driving signal may be applied to the coil 120 through the

lower springs

160a and 160 b.

Next, the case 140 will be described.

Referring to fig. 4a to 4c, the housing 140 supports the magnet 130 and receives the bobbin 110 in the housing 140 such that the AF operation unit, for example, the bobbin 110, can move in the first direction.

The housing 140 may have a generally cylindrical shape including an opening, and the opening of the housing 140 may be a hole formed through the housing 140. The housing 140 may include a plurality of

side portions

141 and 142 defining the opening.

For example, the housing 140 may have a plurality of

side portions

141 and 142 defining a polygonal (e.g., quadrangular or octagonal) or circular opening. The upper surfaces of the

side portions

141 and 142 may define an upper surface of the housing 140.

For example, the case 140 may include a first side portion 141 spaced apart from each other and a second side portion 142 spaced apart from each other. Each of the second side portions 142 may be disposed between two adjacent first side portions.

For example, the length of each of the first side portions 141 of the case 140 may be longer than the length of each of the second side portions 142. For example, the first side portion 141 of the case 140 may be a portion corresponding to a side (side) of the case 140, and the second side portion 142 of the case 140 may be a portion corresponding to a corner of the case 140. For example, the first side portion 141 of the case 140 may be referred to as a "side portion", and the second side portion 142 of the case 140 may be referred to as a "corner portion".

The magnet 130 may be disposed or mounted at each of the first side portions 141 of the case 140. For example, a recess 141a may be provided in each of the first side portions 141 of the case 140, and the magnet 130 is seated, disposed, or fixed in the recess 141 a. In fig. 4a, the recess 141a is formed through the first side portion 141 of the case 140, however, the present disclosure is not limited thereto. The recess may be a concave recess.

The case 140 may have an adhesive injection recess 16, the adhesive injection recess 16 being provided in the first side portion 141 provided with the magnet, and the adhesive injection recess 16 being positioned adjacent to the recess 141 a. An adhesive for adhering the magnet 150 to the recess 141a may be injected through the adhesive injection recess 16.

In addition, the case 140 may have

stoppers

24a and 24b, and the

stoppers

24a and 24b are disposed adjacent to the recess 141a to support the first and second magnets 130-1 and 130-1 inserted into the recess 141 a. The

stoppers

24a and 24b may protrude from an inward facing surface of the recess 141 a. The

stoppers

24a and 24b may have shapes corresponding to or equivalent to the first and

second recesses

10a and 10b of the first and second magnets 130-1 and 130-2, which will be described below.

In addition, a stepped portion 29 in which a stepped portion is formed in the optical axis direction by the upper surface of the housing 140 may be provided at each of the corner portions 142 of the housing 140. A stepped portion 29 may be provided on an upper surface of each of the corner portions of the housing 140. The stepped portion is a portion corresponding to an injection gate for injection molding, and is provided to exclude spatial interference between a component (e.g., an upper elastic member) provided in the housing 140 and burrs generated due to injection molding.

The housing 140 may have a first stopper 143, and the first stopper 143 protrudes from an upper portion or an upper surface of the housing 140.

The first stopper 143 of the housing 140 prevents collision between the cover member 130 and the housing 140. When an external impact occurs, the upper surface of the case 140 can be prevented from directly colliding with the inner surface of the upper portion of the cover member 300.

In addition, a second upper protrusion 144 may be provided on an upper portion or an upper surface of the case 140, and the outer frame 152 of the upper elastic member 150 is coupled to the second upper protrusion 144. For example, the second upper protrusion 144 may be disposed on an upper surface of each of the second side portions 142 of the case 140, however, the present disclosure is not limited thereto. In another embodiment, a second upper protrusion may be provided on an upper surface of each of the first side portions 141 of the case 140.

The case 140 may be provided with a second lower protrusion 147 on a lower portion or a lower surface of the case 140, and the outer frame 162 of the lower elastic member 160 is coupled to the second lower protrusion 147. For example, the second lower protrusion 147 may be disposed on a lower portion or surface of at least one of the first side portion 141 or the second side portion 142 of the case 140.

In addition, a guide recess 148 may be provided in a lower portion or surface of each of the second side portions 142 of the case 140, and the guide member 216 of the base 210 is inserted, fastened, or coupled to the guide recess 148. For example, the guide recess 148 of the housing 140 and the guide member 216 of the base 210 may be coupled to each other via an adhesive member (not shown) or a damper (not shown), and the housing 140 may be coupled to the base 210.

The case 140 may be provided with at least one

protrusion

15a and 15b on an upper portion or an upper surface of the case 140, and the yoke unit 190 is coupled to the at least one

protrusion

15a and 15 b. For example, the at least one

protrusion

15a and 15b may be provided on an upper portion or surface of the case 140 on which the magnet 130 is provided.

For example, the at least one

protrusion

15a and 15b may be provided on an upper portion or surface of two opposite first side portions of the case 140 on which the magnet 130 is provided. For example, the two

protrusions

15a and 15b may be disposed to be spaced apart from each other on two opposite first side portions of the case 140, however, the number of protrusions is not limited thereto.

The case 140 may be provided with

yoke seating portions

18a and 18b on an upper portion or an upper surface of the case 140, and the yoke unit 190 is provided in the

yoke seating portions

18a and 18 b. The

yoke seating portions

18a and 18b may be provided on an upper portion or an upper surface of the first side portion 141 of the case 140 where the magnet 130 is provided. The shape of the

yoke seating portions

18a and 18b may correspond to or conform to the shape of the yoke unit 190.

For example, each of the

yoke seating portions

18a and 18b may include a protrusion protruding inward from an exterior of the case 140 with respect to an inner surface of a corresponding one of the first side portions 141 of the case.

The at least one

protrusion

15a and 15b may be provided in the

yoke seating portions

18a and 18 b.

Next, the magnet 130 will be described.

Referring to fig. 4b and 4c, a magnet 130 may be disposed at each of the first side portions 141 of the case 140. For example, the magnets 130-1 and 130-2 may be disposed at two opposite first side portions 141 of the case 140.

For example, the magnets 130 may include a first magnet 130-1 and a second magnet 130-2, the first magnet 130-1 being disposed at one of two opposite first side portions of the case 140, and the second magnet 130-2 being disposed at the other of the two opposite first side portions of the case 140. In an embodiment, the magnet may be disposed at a second side portion of the case 140. For example, magnets may be provided at two opposite second side portions of the case 140.

At the initial position of the bobbin 110, the magnet 130 provided at the housing 140 may overlap at least a portion of the coil 120 in a direction perpendicular to the optical axis. Here, the initial position of the bobbin 110 may be an original position of the AF operation unit in a state where no power is applied to the coil 120, or may be a position where the AF operation unit is located because the upper elastic member 150 and the lower elastic member are elastically deformed only by the weight of the AF operation unit.

In addition, the initial position of the bobbin 110 may be a position where the AF operation unit is located when gravity acts in a direction from the bobbin 110 to the base 210 or when gravity acts in a direction from the base 210 to the bobbin 110.

For example, the magnet 130 may be disposed in the recess 141a of each of the first side portions 141 of the case 140 to overlap the coil 120 in the second or third direction.

In another embodiment, the recess 141a or the hole may not be formed in each of the first side portions 141 of the case 140, or the magnet 130 may be disposed in one of an outer surface and an inner surface of each of the first side portions 141 of the case 140.

The arrangement of the magnet 130 at each of the first side portions of the housing 140 will be described below.

The shape of the magnet 130 may have a shape corresponding to each of the first side portions 141 of the case 140, for example, a rectangular parallelepiped shape, however, the present disclosure is not limited thereto.

The magnet 130 may be a single-pole magnetized magnet disposed such that a first surface of the magnet 130 facing the coil 120 has an S-pole and a second surface opposite to the first surface has an N-pole.

In addition, for example, the magnet 130 may be a bipolar magnetized magnet divided into two in the optical axis direction or a direction perpendicular to the optical axis. At this time, the magnet 130 may be implemented by ferrite, alnico (alnico), or a rare earth magnet.

The magnet 130 having the bipolar magnetization structure may include: a first magnet portion including an N pole and an S pole; a second magnet portion including an N pole and an S pole; and a nonmagnetic spacer.

The first and second magnet portions may be spaced apart from each other, and each of the first and second magnet portions may include an N pole, an S pole, and an interface between the N pole and the S pole. Here, the interface of each of the first and second magnet portions may be a portion that is substantially non-magnetic, may include a section having a smaller polarity, and may be a portion naturally generated to form a magnet composed of a single N pole and a single S pole.

The non-magnetic separator may be located between the first and second magnet portions and may separate or isolate the first and second magnet portions from each other. The non-magnetic separator may be a substantially non-magnetic part, may comprise sections with less polarity, and may be filled with air or may be made of a non-magnetic material. The nonmagnetic spacer may be represented as a "neutral Zone".

The number of the magnets 130 may be plural. For example, the magnets 130 may include a first magnet 130-1 and a second magnet 130-2.

In an embodiment, the number of the magnets 130 is two to reduce magnetic field interference to an adjacent camera module or lens moving device, however, the present disclosure is not limited thereto.

In another embodiment, the number of magnets 130 may be at least two. The surface of each of the magnets 130 facing the coil 120 may be flat, however, the present disclosure is not limited thereto. The surface of each magnet may be curved.

Next, the upper elastic member 150 and the lower elastic member 160 will be described.

Referring to fig. 5 and 6, the upper and lower elastic members 150 and 160 are coupled to the bobbin 110 and to the housing 140, and flexibly support the bobbin 110.

For example, the upper elastic member 150 may be coupled to an upper portion, an upper surface, or an upper end of the bobbin 110 and to an upper portion, an upper surface, or an upper end of the case 140, and the lower elastic member 160 may be coupled to a lower portion, a lower surface, or a lower end of the bobbin 110 and to a lower portion, a lower surface, or a lower end of the case 140.

The upper elastic member 150 shown in fig. 5 is composed of an upper spring having a single structure, however, the present disclosure is not limited thereto. In another embodiment, the upper resilient member may include a plurality of upper springs spaced apart or separated from each other.

Each of the upper and lower elastic members 150 and 160 may be implemented as a plate spring, however, the present disclosure is not limited thereto. Each of the upper and lower elastic members may be implemented as a coil spring or a suspension wire.

The upper elastic member 150 may include: a first inner frame 151, the first inner frame 151 being coupled to the first upper protrusion 113 of the bobbin 110; a first outer frame 152, the first outer frame 152 being coupled to the second upper protruding portion 144 of the case 140; and a first frame connecting portion 153 for connecting the first inner frame 151 and the first outer frame 152 to each other.

In fig. 5, the upper elastic member 150 is implemented as a single upper spring, however, the present disclosure is not limited thereto. In another embodiment, the upper elastic member 150 may include two or more upper springs.

For example, a through hole 151a or a recess coupled to the first upper protrusion 113 of the bobbin 110 may be provided in the first inner frame 151 of the upper elastic member 150, and a through hole 152a or a recess coupled to the upper protrusion 144 of the case 140 may be provided in the first outer frame 152.

In addition, at least one through

hole

25a or 25b or a recess coupled to the at least one

protrusion

15a and 15b may be provided in the first outer frame 152 of the upper elastic member 150.

The lower elastic member 160 may include a first lower spring 160a and a second lower spring 160b spaced apart from each other. The first lower spring 160a and the second lower spring 160b may be separated from each other.

Each of the first lower spring 160a and the second lower spring 160b may include: a second inner frame 161, the second inner frame 161 being coupled to the first lower protrusion 114 of the wire barrel 110; a second outer frame 162, the second outer frame 162 being coupled to the second lower protrusion 147 of the case 140; and a second frame connecting part 163, the second frame connecting part 163 for connecting the second inner frame 161 and the second outer frame 162 to each other.

For example, a through hole 161a or a recess may be provided in the second inner frame 161 of each of the first and second

lower springs

160a and 160b, the through hole 161a or the recess being coupled to the first lower protrusion 114 of the bobbin 110, and a through hole 162a or a recess may be provided in the second outer frame 162, the through hole 162a or the recess being coupled to the second lower protrusion 147 of the case 140.

For example, the first upper protrusion 113 of the wire barrel 110 and the through hole 151a of the first inner frame, the first lower protrusion 117 of the wire barrel 110 and the through hole 161a of the second inner frame, the second upper protrusion 144 of the case 140 and the through hole 161a of the first outer frame, the second lower protrusion 147 of the case 140 and the through hole 162a of the second outer frame, and the

protrusions

15a and 15b of the case 140 and the through

holes

25a and 25b of the first outer frame may be bonded to each other by an adhesive member or thermal fusion.

Each of the first and second

frame connecting parts

153 and 163 may be formed to be bent or curved (or warped) at least once to form a predetermined pattern. The upward and/or downward movement of the bobbin 110 in the first direction may be flexibly (or elastically) supported by the position change and the slight deformation of the first and second

frame connection parts

153 and 163.

The coil 120 may be coupled to the second inner frames 161 of the first and second

lower springs

160a and 160b, and may be connected to the first and second

lower springs

160a and 160 b.

Referring to fig. 7a, a first coupling portion 19a may be provided at an upper surface of one end portion of the second inner frame 161 of the first lower spring 160a, and one end portion of the coil 120 is coupled to the first coupling portion 19a, and a second coupling portion 19b may be provided at an upper surface of one end portion of the second inner frame 161 of the second lower spring 160b, and the other end portion of the coil 120 is coupled to the second coupling portion 19 b.

The coil 120 may be bonded to the first and

second bonding portions

19a and 19b by a conductive adhesive member such as solder. In the case of the first and

second bonding portions

19a and 19b, the "bonding portion" may also be referred to as a pad portion, a terminal, a connection terminal, a solder portion, or an electrode portion.

In order to prevent the oscillation phenomenon when the bobbin 110 moves, a damper may be provided between the first frame coupling portion 153 of the upper elastic member 150 and the upper surface of the bobbin 110. Alternatively, a damper (not shown) may also be provided between the second frame connecting part 163 of the lower elastic member 160 and the lower surface of the bobbin 110.

Alternatively, a damper may be coated between the upper elastic member 150 and each of the bobbin 110 and the case 140 or between the lower elastic member 160 and each of the bobbin 110 and the case 140. For example, the damper may be gel-type silicon, however, the present disclosure is not limited thereto.

Each of the first and second

lower springs

160a and 160b may be disposed at an upper surface of the base 210.

Each of the first and second

lower springs

160a and 160b may include first and

second connection terminals

164a and 164b for connection with the outside. In the case of the first and

second connection terminals

164a and 164b, the "connection terminal" may also be referred to as a terminal, a pad portion, a bonding portion, a solder portion, or an electrode portion.

For example, each of the first and

second connection terminals

164a and 164b may be connected to an outer surface of the second outer frame 163 of a corresponding one of the first and second

lower springs

160a and 160b, and may be bent and extended toward the base 210.

The first connection terminal 164a of the first lower spring 160a and the second connection terminal 164b of the second lower spring 160b may be disposed to be spaced apart from each other at the first outer surface of the base 210, and may be adjacent to the first outer surface of the base 210.

For example, the first and

second connection terminals

164a and 164b may be disposed at one of the outer surfaces of the base 210. In this case, the welding with the external connection is easily performed, however, the present disclosure is not limited thereto. In another embodiment, the first and second connection terminals of the first lower spring may be disposed at two different outer surfaces of the base 210.

The base 210 may be coupled to the housing 140, and may define a space for receiving the bobbin 110 and the housing 140 together with the cover member 300. The base 210 may have an opening corresponding to the opening of the bobbin 110 and/or the opening of the housing 140. The base may have a shape, such as a quadrangular shape, that conforms to or corresponds to the shape of the cover member 300.

The base 210 may include a guide member 216, and the guide member 216 protrudes upward by a predetermined height from each of four corner portions of the base 210.

For example, the guide member 216 may have a polygonal prism shape protruding from the upper surface of the base 210 to be perpendicular to the upper surface of the base 210, however, the present disclosure is not limited thereto.

The guide member 216 may be inserted into the guide recess 148 of the housing 140, and may be fastened or coupled to the guide recess 148 by an adhesive member (not shown), such as epoxy or silicone.

A first concave portion 205a and a second concave portion 205b may be provided in an outer surface of the base 210, the first concave portion 205a and the second concave portion 205b corresponding to the first connection terminal 164a of the first lower spring 160a and the second connection terminal 164b of the second lower spring 160 b.

For example, the first concave portion 205a and the second concave portion 205b may be disposed spaced apart from each other at an outer surface of one of the side portions of the base 210.

For example, each of the first concave portion 205a and the second concave portion 205b may include an upper opening that opens to an upper surface of the base portion 210 and a lower opening that opens to a lower surface of the base portion 210.

For example, an inner surface of each of the first and

second connection terminals

164a and 164b may be adjacent to one surface (e.g., a bottom surface) of a corresponding one of the first and second

concave portions

205a and 205 b.

An outer surface of each of the first and

second connection terminals

164a and 164b disposed in the first and second

concave portions

205a and 205b may be exposed from an outer surface of the base 210.

In addition, the lower end portion of each of the first and

second connection terminals

164a and 164b may be exposed from the lower surface of the base 210, however, the present disclosure is not limited thereto. In another embodiment, a lower end portion of each of the first and second connection terminals may not be exposed from a lower surface of the base portion 210.

Each of the first and

second connection terminals

164a and 164b may be connected to an external wire or an external element through a conductive material, such as solder, to supply power or a signal from the outside.

In addition, a stepped portion 211 may be provided at a lower end portion of an outer surface of the base 210, and the stepped portion 211 may contact a lower end portion of a side plate of the cover member 300 and may guide the cover member 300. At this time, the stepped portion 211 of the base 210 and the lower end portion of the side plate of the cover member 300 may be adhered, fixed, and sealed by an adhesive.

Each of the first connection terminal 164a of the first lower spring 160a and the second connection terminal 164b of the second lower spring shown in fig. 7a and 7b is integrally formed with the second inner frame 161, the second outer frame 162, and the second frame connection part 163, however, the present disclosure is not limited thereto.

In another embodiment, each of the first and second lower springs may include only the second inner frame 161, the second outer frame 162, and the second frame connection part 163, and each of the first and second connection terminals may be separately provided at the outer surface of the base 210. In this case, one end portion of each of the first and second connection terminals provided at the outer surface of the base 210 may be coupled or bonded to the second outer frame of the corresponding one of the first and second lower springs by a conductive material, such as solder.

The embodiment may be an AF lens moving device installed in a dual camera module. The dual camera module is a camera module including two lens moving devices. For example, the dual camera module may include a lens moving device (hereinafter, referred to as an "AF lens moving device") capable of performing only an auto-focusing function and a lens moving device (hereinafter, referred to as an "OIS lens moving device") capable of performing an auto-focusing function and an optical image stabilization function (OIS).

Fig. 19 illustrates an embodiment of a dual camera module, and fig. 20 is a conceptual diagram of the dual camera module illustrated in fig. 19.

Referring to fig. 19 and 20, the dual camera module may include an OIS camera module 1000 and an AF camera module 1000-1.

For example, the OIS camera module 1000 may include: a bobbin 1100; a housing 1140; an AF coil 1120, the AF coil 1120 being mounted to the bobbin 1100; a magnet 1130, the magnet 1130 being mounted to the housing 1140; an upper spring 1150 and a lower spring 1160, the upper spring 1150 and the lower spring 1160 being coupled to the wire barrel 1110 and the housing 1140; sensing magnets 180 and 185, the sensing magnets 180 and 185 mounted to the bobbin 111; a support member 1220, the support member 1220 being connected between the upper spring 1150 and the circuit board 1250; an OIS coil 1230, the OIS coil 1230 being disposed below the lower elastic member 1160 to correspond to the magnet 1130; a circuit board 1250, the circuit board 1250 being disposed below the OIS coil 1230 to connect to the AF coil 1120, the OIS coil 1230, and the position sensor 1170; and a base portion 1210, the base portion 1210 being disposed below the circuit board 1250.

In addition, the OIS camera module may also include sensing magnets 180 and 185 mounted to the bobbin 111 and a position sensor 1170 mounted to the housing 1140 to sense the magnetic field strength of each of the sensing magnets.

The housing 1140 includes side portions and corner portions between two adjacent side portions. The magnet 1130 may be disposed at each of the corner portions (or the side portions), however, the present disclosure is not limited thereto. In another embodiment, a magnet 1130 may be disposed at each of the side portions of the housing 1140.

The AF lens moving apparatus 1000-1 may include components corresponding to those of the lens moving apparatus 100 according to the embodiment. For example, the AF lens moving apparatus 1000-1 may be the lens moving apparatus 100, and a detailed description of the AF lens moving apparatus 1000-1 will be omitted.

In the dual camera module, the OIS lens moving device 1000 and the AF lens camera module 1000-1 may be disposed to be spaced apart from each other and may be disposed adjacent to each other. For example, the distance d11 between the OIS lens moving device 1000 and the AF lens camera module 1000-1 may be small (e.g., d11 ═ 1 mm).

In addition, for example, the distance between the cover member of the OIS lens moving device 1000 and the cover member of the AF camera module 1000-1 may be less than 3 mm. In addition, for example, the distance between the cover member of the OIS lens moving device 1000 and the cover member of the AF camera module 1000-1 may be less than 2 mm.

The OIS lens moving device 1000 may perform handshake compensation through interaction between the OIS coil 1230 and the magnet 1230. For this, the housing 1140 and the member coupled to the housing 1140 may be moved in a direction perpendicular to the optical axis. By the OIS operation for such handshake compensation, a distance between the first magnet 1130 of the OIS lens moving device 1000 and the magnet of the AF lens moving device 1000-1 may be reduced, whereby magnetic field interference may occur between the magnet 1130 of the OIS lens moving device 1000 and the magnet of the AF lens moving device, and due to such magnetic field interference, the OIS operation of the OIS lens moving device 1000 and the AF operation of the AF lens moving device 1000-1 may be abnormally performed.

In order to reduce magnetic field interference, the cover member 300 of the lens moving device 100 according to the embodiment may be made of a non-magnetic material such as SUS, aluminum (Al), copper (Cu), tin (Sn), or platinum.

In addition, for example, in order to reduce magnetic field interference, the embodiment may not include four magnets, but may include two magnets 130-1 and 130-2, the two magnets 130-1 and 130-2 being disposed at the first side portion 141 of the case 140 not facing the OIS lens moving device 100.

In order to reduce magnetic field interference, a first recess 10a (see fig. 10a) may be provided in a first end (first edge) of each of the magnets 130-1 and 130-2 according to this embodiment.

In addition, in order to balance the electromagnetic force generated by the interaction with the coil 120, a second recess 10b (see fig. 10a) may be provided in a second end portion (second edge) of each of the magnets 130-1 and 130-2.

Fig. 8 illustrates the magnet 130 and the yoke unit 190b mounted to the housing 140, fig. 9 illustrates an embodiment of an arrangement of the housing 140, the first magnet 130, and the first yoke 192a illustrated in fig. 8, fig. 10a illustrates an arrangement of the bobbin 110, the first magnet 130-1, and the first yoke 192a illustrated in fig. 9, and fig. 10b is an enlarged view of the first magnet 130-1 and the first yoke 192a illustrated in fig. 9.

Referring to fig. 8-10 b, the first magnet 130-1 may be disposed offset to one side with respect to the base line 202. For example, the baseline 202 may be a straight line perpendicular to the outer surface of the first side portion of the housing 140 where the first magnet 130-1 is disposed and passing through the center 201 of the housing 140. Alternatively, for example, the base line 202 may be a straight line perpendicular to the outer surface of the side plate of the cover member 200 corresponding to or opposite to the first magnet 130-1 and passing through the center 201 of the case 140.

In another embodiment, the base string 202 may be a straight line passing through the center of the bobbin 110 and perpendicular to the first side portion 141 of the housing where each of the magnets 130-1 and 130-2 is disposed.

For example, the first magnet may be disposed offset from the baseline 202 to a side of the OIS lens shifter 1000 away from the dual camera module.

For example, the first magnet 130-1 may be disposed at the first side portion 140 of the housing 140 such that the centerline 203 of the first magnet 130-1 is located at one side relative to the baseline 202.

For example, the center line 203 of the first magnet 130-1 may be a straight line passing through the center of the first magnet 130-1 between the first and second ends of the first magnet 130-1 and perpendicular to the first or

second side surface

53a or 53b of the first magnet 130-1.

For example, the centerline 203 of the first magnet 130-1 may be the centerline of the long side of the first magnet 130-1, however, the present disclosure is not limited thereto. In another embodiment, the center line of the first magnet 130-1 may be the center line of the short side of the first magnet 130-1.

For example, the centerline 203 and the baseline 202 of the first magnet 130-1 may be parallel to each other. Alternatively, the center line 203 of the first magnet 130-1 may be perpendicular to the first side surface 53a of the first magnet 130-1.

The distance K that the first magnet 130-1 is offset from the baseline 202 or the distance K between the baseline 202 and the centerline 203 may be greater than 0 and may be equal to or less than 0.5mm (0< K ≦ 0.5 mm). Here, K may be a positive real number.

In addition, K may be greater than 0 and may be equal to or less than 0.3mm, for example. In addition, K may be, for example, 0.16mm to 0.2 mm.

In the case where K exceeds 0.5mm, the area where the first magnet 130-1 overlaps with the portion of the coil 120 disposed at the first side surface 110b-1 of the bobbin 110-1 can be reduced, so that the AF driving force can be reduced.

In another embodiment, however, K may be 0, which will be described with reference to fig. 12.

Since the first magnet 130-1 is disposed to be biased to a side away from the OIS lens moving device 1000 of the dual camera module with respect to the base line 202, magnetic field interference may be reduced to prevent abnormal AF operation and improve accuracy of the AF operation.

Referring to fig. 10a, the first magnet 130-1 may include a first Area1 and a second Area2, the first Area1 being located at one side with respect to the center line 203, and the second Area2 being located at the other side with respect to the center line 203.

For example, in fig. 10a, the OIS lens shifter 1000 of the dual camera module may be located at the right side relative to the lens shifter 100.

That is, the first Area1 of the first magnet 130-1 may be an Area closer to the OIS lens moving device 1000 of the dual camera module than the second Area 2.

The first recess 10a may be provided in the first Area1 of the first magnet 130-1 to reduce magnetic field interference. Since the volume or Area of the first Area1 of the first magnet 130-1 is reduced by the first recess 10a, magnetic field interference with the OIS lens moving device 1000 of the dual camera module disposed adjacent to the first Area1 may be reduced.

In order to suppress a decrease in the strength of the electromagnetic force generated by the interaction between the first magnet 130-1 and the first coil 120, the first recess 10a may be formed in the first Area1 of the first magnet 130-1 in the following range: within this range, the overlapping range of the first coil 120 and the first magnet 130-1 in the direction perpendicular to the optical axis is not reduced. The first recess 10a may be inwardly concave with respect to a side surface of the first region Area1 of the first magnet 130-1.

For example, a chamfered first recess 10a (see fig. 10a) may be provided in one corner portion located at a first end (first edge) of the first magnet 130-1. At this time, the first end of the first magnet 130-1 may be an end of the first magnet 130-1 adjacent to the OIS lens moving device of the dual camera module.

The horizontal length of the first side surface 53a (see fig. 10b) of the first magnet 130-1 is shorter than the horizontal length of the second side surface 53b of the first magnet 130-1 due to the first recess 10a, but the horizontal length of the second side surface 53b of the first magnet 130-1 is not affected by the first recess 10 a. Accordingly, the overlapping range between the first magnet 130-1 and the first coil 120 is not reduced by the first recess 10a, and the reduction of the electromagnetic force between the first magnet 130-1 and the coil 120 may be small or slight.

Here, the first side surface 53a of the first magnet 130-1 may be a surface facing the first side surface of the bobbin 110 or the first coil 120, and the second side surface 53b of the first magnet 130-1 may be a surface opposite to the first side surface of the first magnet 130-1.

The horizontal direction of the first side surface 53a of the first magnet 130-1 and the horizontal direction of the second side surface 53b of the first magnet 130-1 may be a direction parallel to a direction from the first end to the second end of the first magnet 130-1.

In fig. 10a, the first recess 10a is provided in a first corner portion, which is one corner portion adjacent to the first side surface 110b-1 of the bobbin, of two corner portions of the first end portion of the first magnet 130-1, however, the present disclosure is not limited thereto. In another embodiment, the first recess may be provided in the second corner portion, which is one of the corner portions of the first end portion of the first magnet 130-1, or the first recess may be provided in each of the first corner portion and the second corner portion. Also, in another embodiment, the horizontal length of the second side surface of the first magnet 130-1 may be shorter than the horizontal length of the first side surface of the first magnet 130-1.

In order to balance the strength of the electromagnetic force between the first coil 120 and the first magnet 130-1, a second recess 10b may be provided in the second Area2 of the first magnet 130-1. The second recess 10b may be inwardly concave with respect to a side surface of the second region Area2 of the first magnet 130-1.

The second recess 10b may be formed in the second Area2 of the first magnet 130-1 within the following range: within this range, the overlapping range between the first coil 120 and the first magnet 130-1 in the direction perpendicular to the optical direction is not reduced.

For example, a chamfered second recess 10b (see fig. 10a) may be provided in one corner portion located at the second end portion of the first magnet 130-1. At this time, the second end of the first magnet 130-1 may be an end of the first magnet 130-1 positioned opposite to the first end of the first magnet 130-1.

For example, the second concave portion 10b may be located at a corner portion of the second Area2 that is disposed in a symmetrical manner with respect to the center line 203 with respect to the corner portion of the first Area1 where the first concave portion 10a is disposed.

For example, the first recess 10a may be adjacent to one end of the first side surface 53a of the first magnet 130-1, and the second recess 10b may be adjacent to the other end of the first side surface 53a of the first magnet 130-1.

For example, the first side surface 53a of the first magnet 130-1 may overlap a portion of the first coil 120 disposed at the first side surface 110b-1 of the bobbin 110 in a direction from the first magnet 130-1 to the first side surface of the bobbin 110.

In addition, for example, each of the first and

second recesses

10a and 10b may overlap a portion of the first coil 120 disposed at the first side surface 110b-1 of the bobbin 110 in a direction from the first magnet 130-1 to the first side surface of the bobbin 110.

Since the first magnet 130-1 is disposed to be biased to one side from the base line 202, unbalance of the electromagnetic force generated by the interaction with the coil 120 with respect to the base line 202 may occur. In order to overcome the imbalance of the electromagnetic force generated by the interaction with the coil 120 due to the arrangement of the first magnet 130-1, the sizes of the first recess 10a and the second recess 10b may be different from each other.

For example, the size of the second recess 10b may be larger than the size of the first recess 10 a.

The horizontal length M2 of the second recess 10b and the horizontal length M1 of the first recess may be different from each other. For example, the horizontal length M2 of the second recess 10b may be greater than the horizontal length M1 of the first recess 10a (M2 > M1).

For example, the difference M2-M1 between the horizontal length M2 of the second recess 10b and the horizontal length M1 of the first recess 10a may be a positive integer multiple of the distance K traveled by the centerline 203 of the first magnet 130-1.

For example, the difference M2-M1 between the horizontal length M2 of the second recess 10b and the horizontal length M1 of the first recess 10a may be the distance K that the center line 203 of the first magnet 130-1 moves (e.g., M2-M1 ═ K).

In addition, for example, the vertical length Q2 of the second recess 10b may be equal to the vertical length Q1 of the first recess 10a (Q2 — Q1), however, the present disclosure is not limited thereto. In another embodiment, the vertical length Q2 of the second recess 10b may be greater than the vertical length Q1 of the first recess 10a (Q2> Q1).

The vertical direction of the first recess 10a may be a direction perpendicular to the horizontal direction of the first recess 10a, and the vertical direction of the second recess 10b may be a direction perpendicular to the horizontal direction of the second recess 10 b.

For example, the vertical length Q1 of the first recess 10a and the vertical length Q2 of the second recess 10b may be less than or equal to 1/2(Q1, Q2 ≦ R/2) of the vertical length R (see FIG. 10b) of the first magnet 130-1. The reason for this is that in the case of Q1 > R/2 and Q2> R/2, the electromagnetic force for AF operation generated by the interaction between the coil 120 and the first magnet 130-1 in a predetermined order of magnitude cannot be sufficiently obtained.

The first distance d1 may be equal to the second distance d 2. The first distance d1 may be a distance between a corner portion where the first side surface 53a of the first magnet 130-1 and the first recess 10a are joined and the first corner portion S1 of the wire barrel 110 in a direction parallel to the horizontal direction of the first magnet 130-1.

The second distance d2 may be a distance between a corner portion where the first side surface 53a of the first magnet 130-1 and the second recess 10b are joined and the second corner S2 of the wire barrel 110 in a direction parallel to the horizontal direction of the first magnet 130-1.

S1 may be a corner portion where a corresponding or opposite first side surface 110b-1 of the bobbin 110 and the first side portion of the housing where the first magnet 130-1 is disposed or the first side surface 53a of the first magnet 130-1 is engaged with a second side surface 110b-2 of the bobbin 110 adjacent to the first side surface 110 b-1.

S2 may be a corner portion where the first side surface 110b-1 of the bobbin 110 is joined with another second side surface 110b-2 of the bobbin 110 adjacent to the first side surface 110 b-1.

Since d1 is d2, imbalance in the intensity of the electromagnetic force generated by the interaction between the first magnet 130-1 and the coil 120 with respect to the base line 202 can be alleviated.

The first end of the first magnet 130-1 may protrude from the center of the first magnet 130-1 toward the first end of the first magnet 130-1 with respect to the first corner portion S1 of the bobbin 110.

The second end of the first magnet 130-1 may protrude from the center of the first magnet 130-1 toward the second end of the first magnet 130-1 with respect to the second corner portion S2 of the bobbin 110.

For example, the second end of the first magnet 130-1 may protrude longer than the first end of the first magnet 130-1.

In fig. 10a, a corner portion where the first side surface 53a of the first magnet 130-1 is engaged with the first recess 10a corresponds to or overlaps the first side surface 110b-1 of the bobbin 110 in a direction from the first magnet 130-1 to the first side surface 53a of the bobbin 110, and a corner portion where the first side surface 53a of the first magnet 130-1 is engaged with the second recess 10b corresponds to or overlaps the first side surface 110b-1 of the bobbin 110, however, the present disclosure is not limited thereto.

In another embodiment, a corner portion at which the first side surface 53a of the first magnet 130-1 is engaged with the first recess 10a may correspond to a first corner portion S1 of the wire barrel 110 or may be aligned with a first corner portion S1 of the wire barrel 110, and a corner portion at which the first side surface 53a of the first magnet 130-1 is engaged with the second recess 10b may correspond to a second corner portion S2 of the wire barrel 110 or may be aligned with a second corner portion S2 of the wire barrel 110.

The first yoke 192a may be disposed to overlap the first magnet 130-1 in the optical axis direction on an upper surface of the upper elastic member 150 disposed at the case 140.

In addition, the second yoke 192b may be disposed to overlap the second magnet 130-2 in the optical axis direction on an upper surface of the upper elastic member 150 disposed at the case 140.

The first yoke 192a may increase the intensity of the electromagnetic force generated by the interaction between the coil 120 and the first magnet 130-1. In addition, the second yoke 192b may increase the strength of the electromagnetic force generated by the interaction between the coil 120 and the second magnet 130-2.

For example, the electromagnetic force (e.g., 0.162N) when the yoke unit 190 is provided may be higher by about 6.5% than the electromagnetic force (e.g., 0.152N) when the yoke unit 190 is not provided.

The first yoke 192a may include a body 192-1, a first extension 192-2, and a second extension 192-3, the first extension 192-2 being connected to the body 192-1 and extending to one side of the body 192-1, and the second extension 192-3 being connected to the body 192-1 and extending to the other side of the body 192-1.

For example, the first extension portion 192-2 may extend from the centerline 203 of the first magnet 130-1 toward the first end of the first magnet 130-1, and the second extension portion 192-3 may extend from the centerline 203 of the first magnet 130-1 toward the second end of the first magnet 130-1.

The first magnet 130-1 according to an embodiment may have a T shape due to the first and

second recesses

10a and 10 b. In addition, the first yoke 192a located on the first magnet 130-1 may also have a T shape, however, the present disclosure is not limited thereto.

As shown in fig. 10a and 10b, the centerline of the first yoke 192A may be located in the range of 0 to K toward the centerline 203 of the first magnet 130-2 with respect to the baseline 202.

For example, the centerline of the first yoke 192A may be located in a range of 0mm to 0.5mm from the baseline 202 toward the centerline 203 of the first magnet 130-1 with respect to the baseline 202.

The centerline of the first yoke 192a may be a straight line passing through the center of the first yoke 192a and parallel to the baseline 202 or the centerline 203 of the first magnet 130-1. Here, K may be the distance that the first magnet 130-1 is offset from the baseline 202, as described with reference to fig. 10 a.

For example, a centerline of the first yoke 192a may be aligned with the baseline 202.

The first yoke 192a may be disposed in a symmetrical manner with respect to the base line 202. This is an arrangement in consideration of the center of gravity of the first yoke 192 a. In addition, as shown in fig. 10a and 10b, the first yoke 192a may be disposed in an asymmetrical manner with respect to the center line 203.

The body 192-1 of the first yoke 192a may overlap the first and second regions Area1 and 2 of the first magnet 130-1 in the optical axis direction, the first extension portion 192-2 of the first yoke 192a may overlap the first region Area1 of the first magnet 130-1 in the optical axis direction, and the second extension portion 192-3 of the first yoke 192a may overlap the second region Area2 of the first magnet 130-1 in the optical axis direction.

The horizontal length L of the first yoke 192a may be smaller than the horizontal length M of the first magnet 130-1 (L < M), however, the present disclosure is not limited thereto. In another embodiment, L ═ M.

For example, each of the first and second extension portions 192-2 and 192-3 may be positioned closer to the second side surface 53b of the first magnet 130-1 than to the first side surface 53a of the first magnet 130-1. For example, the distance between each of the first and second extension portions 192-2 and 192-3 and the second side surface 53b may be shorter than the distance between each of the first and second extension portions 192-2 and 192-3 and the first side surface 53 a.

The horizontal length L2 of the first extension 192-2 may be smaller than the horizontal length L1 of the body 192-1 of the first yoke 192a (L2 < L1). The horizontal length L3 of the second extension 192-3 may be smaller than the horizontal length L1 of the body 192-1 of the first yoke 192a (L3 < L1). This serves to prevent a decrease in the strength of the electromagnetic force generated by the interaction between the coil 120 and the first magnet 130-1.

For example, the horizontal length L2 of the first extension portion 192-2 and the horizontal length L3 of the second extension portion 192-3 may be equal to each other, however, the present disclosure is not limited thereto.

In another embodiment, L2 and L3 may be different from each other. For example, the horizontal length L3 of second extension 192-3 may be shorter than the horizontal length L2 of first extension 192-2. This serves to alleviate the imbalance in the strength of the electromagnetic force due to the offset arrangement of the first magnet 130-1.

For example, the ratio L2/L3 of the horizontal length L2 of the first extension 192-2 to the horizontal length L3 of the second extension 192-3 may be a positive integer multiple of the ratio M1/M2 of the horizontal length M1 of the first well 10a to the horizontal length M2 of the first well 10 b. For example, L2/L3 ═ M1/M2.

The first extension portion 192-2 may protrude toward a first end of the first magnet 130-1 with respect to a corner portion where the first recess 10a is engaged with the first side surface 53a of the first magnet 130-1. In addition, the second extension portion 192-3 may protrude toward a corner portion where the second end of the first magnet 130-1 is engaged with the first side surface 53a of the first magnet 130-1 with respect to the second recess portion 10 b.

The vertical length D1 of the body 192-1 of the first yoke 192a may be smaller than the vertical length R of the first magnet 130-1, however, the present disclosure is not limited thereto. In another embodiment, D1 ═ R.

The thickness of the first yoke 192a may be 0.01 to 3mm, however, the present disclosure is not limited thereto. For example, the thickness of the first yoke 192a may be 0.01mm to 1 mm.

In the case where the thickness of the first yoke 192a is less than 0.01mm, the effect of increasing the electromagnetic force generated by the interaction between the magnet 130 and the first coil 120 may be slight. In the case where the thickness of the first yoke 192a exceeds 3mm, the weight of the first yoke 192a may increase, and thus the total weight of the lens moving device 100 may greatly increase.

The vertical length D2 of the first extension 192-2 may be less than the vertical length D1 of the body 192-1 (D2< D1), and the vertical length D3 of the second extension 192-3 may be less than the vertical length D1 of the body 192-1 (D3 < D1).

For example, each of D2 and D3 may be less than or equal to 1/2 of the vertical length D1 of body 192-1 (D2, D3 ≦ D1/2), however, the disclosure is not so limited.

For example, the horizontal length L of the first yoke 192a may be 80% to 95% of the horizontal length M of the second side surface 53b of the first magnet 130-1, however, the present disclosure is not limited thereto. In the case where L is less than 80% of M, the electromagnetic force generated by the interaction between the first magnet 130-1 and the coil 120 may be reduced. In the case where L exceeds 95% of M, the effect of magnetic field interference may increase.

In addition, for example, the vertical length D2 of the first extension portion 192-2 of the first yoke 192a and the vertical length D3 of the second extension portion 192-3 of the first yoke 192a may be 10% to 50% of the vertical length R of the first magnet 130-1, however, the present disclosure is not limited thereto.

In the case where D2 and D3 are less than 10% of R, the electromagnetic force generated by the interaction between the first magnet 130-1 and the coil 120 may be reduced. In the case where D2 and D3 exceed 50% of R, the effect of magnetic field disturbance may increase.

Each of the first and

second yokes

192a and 192b may be made of a magnetic material. Therefore, in the case where the sizes of the first extension portion and the second extension portion are large, magnetic field interference to the OIS lens moving apparatus 1000 may increase. Thus, in one embodiment, D2 and D3 are smaller than D1 to reduce magnetic field interference.

The first extending portion 192-2 may not overlap the first recess portion 10a in the optical axis direction, and the second extending portion 192-3 may not overlap the second recess portion 10b in the optical axis direction. This serves to increase the intensity of the electromagnetic force generated by the interaction between the coil 120 and the first magnet 130-1 caused by the first yoke 192 a.

The body 192-1 of the first yoke 192a may be provided with at least one through hole 21a and 21b configured to be coupled to the at least one

protrusion

15a and 15b of the case 140, and a cut portion 22, and the cut portion 22 may be formed in the at least one through hole 21a and 21b, and the adhesive member penetrates into the cut portion 22. The at least one

protrusion

15a and 15b of the case 140 may be coupled to the through

holes

25a and 25b of the upper elastic member 150 and to the through holes 21a and 21b of the first yoke 192a, and the

protrusions

15a and 15b of the case 140, the through

holes

25a and 25b of the upper elastic member 150, and the through holes 21a and 21b of the first yoke 192a may be coupled to each other by an adhesive member.

In fig. 9 to 10b, the description of the arrangement and size of the first magnet 130-1 and the first yoke 192a may be equally applied to the first magnet 130-2 and the second yoke 192 b.

Fig. 11a illustrates an arrangement of the first yoke 192a1 according to another embodiment, and fig. 11b is an enlarged view of the first magnet 130-1 and the first yoke 192a1 illustrated in fig. 11 a.

Referring to fig. 11a and 11b, the first yoke 192al may be disposed in a symmetrical manner with respect to the center line 203 of the first magnet 130-1.

For example, the body of the first yoke 192a1 may be disposed in a symmetrical manner with respect to the center line 203 of the first magnet 130-1, and the first and second extending portions of the first yoke 192a1 may be disposed in a symmetrical manner with respect to the center line 203 of the first magnet 130-1.

In addition, the first yoke 192al may be disposed in an asymmetrical manner with respect to the baseline 202.

In the embodiment of fig. 11a and 11b, the first yoke 192a according to the embodiment of fig. 10a and 10b moves the first magnet 130-1 by a distance K in the direction in which the centerline 203 of the first magnet 130-1 moves relative to the baseline 202.

For example, a centerline of the first yoke 192a1 may be aligned with the centerline 203 of the first magnet 130-1.

Since the first yoke 192a1 is disposed in a symmetrical manner with respect to the center line 203 of the first magnet 130-1, an effect of increasing the intensity of the electromagnetic force between the coil 120 and the first magnet 130-1 due to the first yoke 192a1 disposed in a balanced manner can be obtained.

In addition, referring to fig. 11b, in another embodiment, for example, the center line of the first yoke 192a1 may be located in a range of 0 to K1 (K1 is a positive real number) from the base line 202 toward the center line 203 of the first magnet 130-1 with respect to the center line 203 of the first magnet 130-1. For example, K1 ═ K, however, the disclosure is not limited thereto.

The description of the first yoke 192a with reference to fig. 10a and 10b may be equally applied to fig. 11a and 11b, except for the arrangement of the centerlines of the first yokes 192a 1.

Also, in fig. 11a and 11b, the description of the arrangement of the first magnet 130-1 and the first yoke 192a1 may be equally applied to the second magnet 130-2 and the second yoke 192 b.

Fig. 12 shows an arrangement of the first yoke 192al according to another embodiment.

In the embodiment shown in fig. 12, the centerline 203 of the first magnet 130-1 may be disposed in alignment with the baseline 202. In addition, the first and second recesses of the first yoke 192a1 may have the same size.

For example, the horizontal length M1 of the first recess 10a may be equal to the horizontal length M2 of the second recess (M1 — M2), and the vertical length Q1 of the first recess 10a may be equal to the vertical length Q2 of the second recess (Q1 — Q2).

The first magnet 130-1 may be disposed in a symmetrical manner with respect to the base line 202, and the first yoke 192al may be disposed in a symmetrical manner with respect to the base line 202.

The description of the first magnet 130-1 and the first yoke 192a with reference to fig. 10a and 10b may be equally applied to the embodiment of fig. 12, except that the centerline 203 of the first magnet 130-1 is aligned with the baseline 202 and the dimensions of the first recess and the second recess are equal to each other. Also, in fig. 12, the description of the arrangement of the first magnet 130-1 and the first yoke 192a1 may be equally applied to the second magnet 130-2 and the second yoke 192 b.

Fig. 13 shows a first yoke 192a2 according to another embodiment.

Referring to fig. 13, the first yoke 192a2 may include a body 192-1, a first extension 192-2, a second extension 192-3, and a third extension 192-4.

The third extension 192-4 may extend from at least one of the body 192-1, the first extension 192-2, or the second extension 192-3, and may be bent to an outer surface of the first side portion 141 of the housing 140.

For example, the third extension portion 192-4 may extend from one side surface of the body 192-1, one side surface of the first extension portion 192-2, and one side surface of the second extension portion 192-3, and may be bent to an outer surface of the first side portion 141 of the case 140 where the first magnet 130-1 is disposed.

The inner surface of the third extension portion 192-4 may abut the second side surface 53b of the first magnet 130-1, however, the present disclosure is not limited thereto. In another embodiment, the inner surface of the third extension portion 192-4 and the second side surface 53b of the first magnet 130-1 may be spaced apart from each other.

One end of the third extension portion 192-4 may be positioned higher than the lower end of the first magnet 130-1, however, the present disclosure is not limited thereto. In another embodiment, one end of the third extension portion 192-4 may be positioned lower than the lower end of the first magnet 130-1.

The third extension 192-4 may increase the intensity of the electromagnetic force generated by the interaction between the coil 120 and the first magnet 130-1.

As shown in fig. 2, each of the first and

second yokes

192a and 192b may be disposed on an upper surface of the upper elastic member 150, however, the present disclosure is not limited thereto.

In another embodiment, the first and second yokes may be located between the upper elastic member 150 disposed on the upper surface of the case 140 and the upper surface of the first magnet 130-1 disposed at the case 140, and may be disposed at the first side portion 141 of the case 140.

For example, the first and second yokes according to the embodiment may be located between the lower surface of the upper elastic member 150 and the upper surface of the first side portion of the case 140, and may be inserted or seated into a recess provided in the upper surface of the first side portion 141 of the case 140.

In another embodiment, the first and second yokes may be inserted or seated into recesses provided in side surfaces of the first side portion of the housing 140 between an upper surface of the first side portion of the housing 140 and an upper surface of the first magnet.

As shown in fig. 2, the first yoke 192a is disposed to be spaced apart from the first magnet 130-1 and the second yoke 192b is disposed to be spaced apart from the second magnet 130-2, however, the present disclosure is not limited thereto.

In another embodiment, the first yoke 192a may be disposed at a first side portion of the case 140 between the upper elastic member 150 and the first magnet 130-1 disposed at the case 140. In this case, the lower surface of the first yoke 192a may contact the upper surface of the first magnet 130-1, however, the present disclosure is not limited thereto. In another embodiment, the lower surface of the first yoke 192a and the upper surface of the first magnet 130-1 may be spaced apart from each other.

In addition, the second yoke 192b may be disposed at a first side portion of the case 140 between the upper elastic member 150 and the second magnet 130-2 disposed at the case 140. In this case, the lower surface of the second yoke 192b may contact the upper surface of the second magnet 130-2, however, the present disclosure is not limited thereto. In another embodiment, the lower surface of the second yoke 192b and the upper surface of the second magnet 130-2 may be spaced apart from each other.

In fig. 13, the description of the arrangement of the first magnet 130-1 and the first yoke 192a1 may be equally applied to the second magnet 130-2 and the second yoke.

Fig. 14a shows an arrangement of the first magnet 130-1 and the first yoke 192a3 according to another embodiment.

Referring to fig. 14a, the first yoke 192a3 may be disposed adjacent to the first magnet 130-1 at a first side portion of the case 140. For example, the lower surface of the first yoke 192a3 may contact the lower surface of the first magnet 130-1.

The first yoke 192a3 may include a body 192-1, a first extension 192-2, a second extension 192-3, and a third extension 192-4.

The body 192-1, the first extension 192-2, and the second extension 192-3 may be disposed on an upper surface of the first magnet 130-1, and the third extension 192-4 may be bent from at least one of the body 192-1, the first extension 192-2, or the third extension 192-3 to the second side surface 53b of the first magnet 130-1.

Fig. 14b shows a modification of fig. 13.

Referring to fig. 14b, the first yoke 192a4 may include a body 192-1, a first extension 192-2, a second extension 192-3, a third extension 192-4, and a fourth extension 192-5.

The fourth extension portion 192-5 may extend from the first extension portion 192-2 and then may be bent to the third side surface of the first magnet 130-1, and may extend from the second extension portion 192-2 and then may be bent to the fourth side surface of the first magnet 130-1. The third and fourth side surfaces of the first magnet 130-1 may be located between the first and second side surfaces 53a and 53b of the first magnet 130-1, and may face each other.

The third extension 192-4 or 192-4a and the fourth extension 192-5 of fig. 13, 14a and 14b may increase the strength of the electromagnetic force generated by the interaction between the first magnet 130-1 and the coil 120.

The description of the first magnet 130-1 and the first yoke 192a3 or 192a4 of fig. 14a and 14b may be equally applied to the second yoke and the second magnet according to the corresponding embodiments.

Fig. 15a shows the displacement and inclination of the AF operation unit depending on the driving current at room temperature when the yoke unit 190 according to the embodiment is not provided, and fig. 15b shows the inclination value of the displacement and sensitivity of the AF operation unit of fig. 14 a. The X-axis represents the drive current applied to the coil 120, and the unit of the drive current is mA. The left Y-axis represents the displacement of the AF operation unit, and the unit of the displacement of the AF operation unit may be μm. The right Y-axis represents the tilt of the displacement diagram of the AF operation unit. The sensitivity of the AF operation unit may be a ratio of a moving distance of the AF operation unit to a driving current applied to the coil 120.

Referring to fig. 15a and 15b, the inclination value of the displacement of the AF operation unit may be 0.033 °, and the sensitivity of the AF operation unit may be 4.108 μm/mA.

Fig. 16a shows the displacement and inclination of the AF operation unit depending on the driving current at an ambient temperature of 99 ℃ when the yoke unit 190 according to the embodiment is not provided, and fig. 16b shows the inclination value of the displacement and sensitivity of the AF operation unit of fig. 16 a.

Referring to fig. 16a and 16b, the inclination value of the displacement of the AF operation unit may be 0.052 °, and the sensitivity of the AF operation unit may be 3.365 μm/mA.

The sensitivity of the AF operation unit of fig. 16b is reduced by about 18% compared to fig. 15 b. The reason for this is that the magnet 130 is demagnetized when the ambient temperature rises.

Fig. 17a shows the displacement and inclination of the AF operation unit depending on the driving current at room temperature when the yoke unit 190 is set, and fig. 17b shows the inclination value of the displacement and sensitivity of the AF operation unit of fig. 17 a.

Referring to fig. 17a and 17b, the sensitivity of the AF operation unit may be 4.519 μm/mA. The sensitivity of the AF operation unit of fig. 17b can be increased by about 10% compared to fig. 15 b. The reason for this is that the electromagnetic force generated by the interaction between the magnet 130 and the coil 120 is increased by the yoke unit 190.

Fig. 18a shows the displacement and inclination of the AF operation unit depending on the driving current at an ambient temperature of 99 ℃ when the yoke unit 190 is set, and fig. 18b shows the inclination value of the displacement and sensitivity of the AF operation unit of fig. 18 a.

Referring to fig. 18a and 18B, the sensitivity of the AF operation unit may be 4.316 μm/mA. Compared to fig. 17b, the sensitivity of the AF operation unit of fig. 18b is reduced by about 1.8% due to demagnetization of the magnet 130 by heat.

In the case of fig. 16b where the yoke unit 190 is not provided, the sensitivity of the AF operation unit of fig. 16b is reduced by about 18% due to demagnetization of the magnet 130 by heat. However, in the case of fig. 18b provided with the yoke unit 190, the sensitivity of the AF operation unit of fig. 18b is reduced by about 1.8% due to demagnetization of the magnet 130 by heat. The reason for this is that demagnetization of the magnet 130 due to heat can be suppressed by the yoke unit 190. Therefore, in the present embodiment, demagnetization of the magnet 130 due to heat can be suppressed, so that reduction of electromagnetic force generated by interaction between the coil 120 and the magnet 130 can be suppressed, and thus the AF operation can be accurately performed.

In the embodiment, as described above, the AF driving force by the first and second magnets 130-1 and 130-2 and the yoke unit 190 may be ensured, and the magnetic field interference to the adjacent lens moving devices may be reduced.

The lens moving device 100 according to the above embodiment may further include a position sensor provided at the housing 140 to perform AF feedback. At this time, the position sensor may be disposed at one of side portions of the case 140 where the magnet is not disposed.

In addition, the lens moving device 100 may further include a sensing magnet disposed at the bobbin 110 to correspond to or oppose the position sensor. In addition, the lens moving device 100 may further include a balance magnet disposed at the bobbin 110 to correspond to or oppose the sensing magnet.

The lens moving device 100 according to the above embodiment may be implemented as a camera module or an optical instrument, or may be used in various fields such as a field of a camera module or an optical instrument.

For example, the lens moving device 100 according to the embodiment may be included in an optical instrument configured to form an image of an object in space using optical characteristics of reflection, refraction, absorption, interference, diffraction, or the like to enhance the visual power of the eye, record or reproduce an image formed through a lens, perform optical measurement, or transmit an image. For example, the optical instrument according to the embodiment may include a smartphone or a portable terminal equipped with a camera.

Fig. 21 is an exploded perspective view of the camera module 200 according to the embodiment.

Referring to fig. 21, the camera module 200 may include a lens or a lens barrel 400, a lens moving device 100, an adhesive member 612, an optical filter 610, a first holder 600, a second holder 800, an image sensor 810, a motion sensor 820, a controller 830, and a connector 840.

The lens or lens barrel 400 may be installed in the wire barrel 110 of the lens moving device 100.

The first holder 600 may be disposed below the base portion 210 of the lens moving device 100. The optical filter 610 may be mounted to the first holder 600, and the first holder 600 may be provided with a protrusion on which the optical filter 610 is seated.

The adhesive member 612 may couple or adhere the base portion 210 of the lens moving device 100 to the first holder 600. For example, the adhesive member 612 may be an epoxy resin, a thermosetting adhesive, or an ultraviolet hardening adhesive.

The filter 610 may function to prevent specific frequency band components of light passing through the lens barrel 400 from being incident on the image sensor 810. The filter 610 may be an infrared cut filter, however, the present disclosure is not limited thereto. At this time, the filter 610 may be disposed parallel to the x-y plane.

An opening through which light passing through the optical filter 610 is incident on the image sensor 810 may be provided in a region of the first holder 600 where the optical filter 610 is mounted.

The second holder 800 may be disposed below the first holder 600, and the image sensor 810 may be mounted on the second holder 600. The image sensor 810 is the following region: light passing through the filter 610 is incident on the area to form an image containing the light.

The second holder 800 may be provided with various circuits, elements, and controllers to convert an image formed on the image sensor 810 into an electrical signal and transmit the electrical signal to an external device. The second holder 800 may be implemented as a circuit board on which the image sensor may be mounted, on which a circuit pattern may be formed, and on which various elements are coupled to each other. The first holder 600 may also be referred to as a "holder" or "sensor base", and the second holder 800 may also be referred to as a "board" or "circuit board".

The image sensor 810 may receive an image contained in light incident through the lens moving device 100 and may convert the received image into an electrical signal.

The filter 610 and the image sensor 810 may be disposed to be spaced apart from each other in a state of being opposite to each other in the first direction.

The motion sensor 820 may be mounted on the second holder 800 and may be connected to the controller 830 via a circuit pattern provided on the second holder 800.

The motion sensor 820 outputs information on a rotation angular velocity based on the motion of the camera module 200. The motion Sensor 820 may be implemented as a two-axis or three-axis Gyro Sensor (Gyro Sensor) or an angular velocity Sensor.

The controller 830 is mounted on the second holder 800. The second holder 800 may be connected to the lens moving device 100. For example, the second holder 800 may be connected to the first coil 120 of the lens moving device 100. In the case where the lens moving device includes a position sensor, the second holder 800 may be connected to the position sensor.

For example, the driving signal may be provided to the first coil 120 through the second holder 800. In the case where the lens moving device includes a position sensor, a driving signal may be provided to the position sensor through the second holder 800. An output signal of the position sensor may be transmitted to the second holder 800, and the output signal of the position sensor may be received by the controller 830.

The connector 840 may be connected to the second holder 800 and may have a port for connection with an external device.

Fig. 22 is a perspective view of a portable terminal 200A according to an embodiment, and fig. 23 illustrates a structure of the portable terminal 200A illustrated in fig. 22.

Referring to fig. 22 and 23, a portable terminal 200A (hereinafter, referred to as a "terminal") may include a body 850, a wireless communication unit 710, an a/V input unit 720, a sensing unit 740, an input/output unit 750, a memory unit 760, an interface unit 770, a controller 780, and a power supply unit 790.

The body 850 shown in fig. 22 has a bar shape, however, the present disclosure is not limited thereto. The body may have any one of various structures such as a sliding type structure, a folding type structure, a swing type structure, and a rotating type structure, in which two or more sub-bodies are coupled to be movable relative to each other.

The body 850 may include a case (housing, casing, cover, etc.) defining an appearance of the body 850. For example, the body 850 may be divided into a front case 851 and a rear case 852. Various electronic components of the terminal may be mounted in a space defined between the front case 851 and the rear case 852.

The wireless communication unit 710 may include one or more modules that enable wireless communication between the terminal 200A and a wireless communication system or between the terminal 200A and a network in which the terminal 200A is located. For example, the wireless communication unit 710 may include a broadcast receiving module 711, a mobile communication module 712, a wireless internet module 713, a near field communication module 714, and a location information module 715.

An a/V (audio/video) input unit 720 provided to input an audio signal or a video signal may include a camera 721 and a microphone 722.

The camera 721 may include the camera module 200 according to the embodiment shown in fig. 21.

The sensing unit 740 may sense a current state of the terminal 200A, such as open and closed states of the terminal 200A, a position of the terminal 200A, whether a user contacts the terminal, an orientation of the terminal 200A, and acceleration/deceleration of the terminal 200A, to generate a sensing signal for controlling an operation of the terminal 200A. For example, in the case where the terminal 200A is a slide phone, the sensing unit may sense whether the slide phone is opened or closed. In addition, the sensing unit senses whether power is supplied from the power supply unit 790 and whether the interface unit 770 is coupled to an external instrument.

The input/output unit 750 is arranged to generate inputs or outputs related to visual, auditory or tactile. The input/output unit 750 may generate input data for controlling the operation of the terminal 200A and may display information processed by the terminal 200A.

The input/output unit 750 may include a keyboard unit 730, a display panel 751, a sound output module 752, and a touch screen panel 753. The keyboard 730 may generate input data by keyboard input.

The display panel 751 may include a plurality of pixels, and colors of the plurality of pixels are changed according to an electric signal. For example, the display panel 751 may include at least one of a liquid crystal display, a thin film transistor-liquid crystal display, an organic light emitting diode, a flexible display, or a three-dimensional (3D) display.

The sound output module 752 may output audio data received from the wireless communication unit 710 in a call signal reception mode, a phone communication mode, a recording mode, a voice recognition mode, or a broadcast reception mode, or may output audio data stored in the memory unit 760.

The touch screen panel 753 may convert a change in capacitance due to a user's touch on a specific region of the touch screen into an electrical input signal.

The memory unit 760 may store programs for processing and control by the controller 780, and may temporarily store input/output data (e.g., phonebook, message, audio, still image, picture, and video). For example, the memory unit 760 may store images, such as pictures or videos, taken by the camera 721.

The interface unit 770 serves as a path for connection between the terminal 200A and an external instrument. The interface unit 770 may receive data from an external instrument, may receive power and transmit the received power to internal components of the terminal 200A, or may transmit data in the terminal 200A to an external instrument. For example, the interface unit 770 may include a wired/wireless headset port, an external charger port, a wired/wireless data port, a memory card port, a port for connecting with a device having an identification module, an audio input/output (I/O) port, a video input/output (I/O) port, and a headset port.

The controller 780 may control the overall operation of the terminal 200A. For example, the controller 780 may perform related control and processing for voice communication, data communication, and video communication.

The controller 780 may have a multimedia module 781 for multimedia playback. The multimedia module 781 may be implemented in the controller 780 or may be implemented separately from the controller 780.

The controller 780 may perform a pattern recognition process capable of recognizing a writing input or a drawing input performed on the touch screen as text or an image, respectively.

The power supply unit 790 may receive external power and internal power and supply required power to the respective components under the control of the controller 780.

The features, structures, and effects described in the above embodiments are included in at least one embodiment, but are not limited to only one embodiment. Further, those skilled in the art to which the respective embodiments pertain may combine or modify the features, structures, and effects shown in each embodiment in other embodiments. Accordingly, it is to be understood that such combinations and modifications are within the scope of the present disclosure.

[ INDUSTRIAL APPLICABILITY ]

The embodiments may be applied to a lens moving device capable of securing an AF driving force and reducing magnetic field interference to an adjacent lens moving device, and a camera module and an optical instrument including the lens moving device.

Claims

1. A lens moving device comprising:

a housing;

a spool disposed in the housing;

a coil disposed at the bobbin;

a magnet disposed at a side portion of the housing, the magnet including a first side surface facing the coil and a second side surface opposite the first side surface; and

a yoke provided at an upper portion of the housing to overlap the magnet in an optical axis direction, wherein,

the centerline of the magnet is located at one side relative to the baseline,

providing a first recess in a first end of the magnet, the first recess abutting one end of the first side surface of the magnet,

providing a second recess in a second end of the magnet, the second recess abutting another end of the first side surface of the magnet,

the base line is a straight line passing through the center of the housing and perpendicular to the outer surface of the side portion of the housing where the magnet is disposed, and

the center line of the magnet is a straight line passing through a center of the magnet between the first end portion and the second end portion of the magnet and perpendicular to the first side surface of the magnet.

2. The lens moving device according to claim 1,

the first concave portion is formed by chamfering one corner portion at the first end portion of the magnet, and

the second recess is formed by chamfering one corner portion located at the second end portion of the magnet.

3. The lens moving device according to claim 2,

the horizontal length of the second recess is longer than that of the first recess, and

each of a horizontal direction of the second recess and a horizontal direction of the first recess is a direction parallel to a direction from the first end to the second end of the magnet.

4. The lens moving device according to claim 2,

the centerline of the magnet is spaced apart from the baseline by K (K being a positive real number),

k is greater than 0mm and equal to or less than 0.5 mm.

5. The lens moving device according to claim 3, wherein a center line of the yoke is located in a range of 0mm to 0.5mm from the base line toward the center line of the magnet with respect to the base line.

6. The lens moving device according to claim 3,

a horizontal length of the second side surface of the magnet is longer than a horizontal length of the first side surface of the magnet, and

each of a horizontal direction of the first side surface of the magnet and a horizontal direction of the second side surface of the magnet is a direction parallel to a direction from the first end to the second end of the magnet.

7. The lens moving device according to claim 6, wherein the yoke comprises:

a body;

a first extension portion connected to the body, the first extension portion extending from the centerline of the magnet toward the first end of the magnet; and

a second extension portion connected to the body, the second extension portion extending from the centerline of the magnet toward the second end of the magnet.

8. The lens moving device according to claim 7,

each of a vertical length of the first extension portion and a vertical length of the second extension portion is less than a vertical length of the body, and

each of a vertical direction of the first extending portion, a vertical direction of the second extending portion, and a vertical direction of the body is a direction perpendicular to the horizontal direction of the first side surface of the magnet.

9. The lens moving device according to claim 7, wherein the yoke is disposed in a symmetrical manner with respect to the base line and is disposed in an asymmetrical manner with respect to the center line of the magnet.

10. The lens moving device according to any one of claims 1 to 9, further comprising:

an upper resilient member coupled to the upper portion of the housing, wherein,

the yoke is provided on the upper elastic member, and

the housing includes a protrusion coupled to the upper resilient member and to the yoke.